JP2013222701A - Led lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a plurality of lamps by making a base itself of the lamp with an LED board into a shape capable of obtaining high heat radiation efficiency.SOLUTION: A long base is formed with a material excellent in heat conduction and heat radiation, a cross-section shape of the base is made into a fan shape having a concave groove headed from an inner edge toward the center, and a board mounting a large number of LEDs is fitted on the outside surface of the base extending along a length direction. The LEDs and the board are covered with a protection cover formed of a material transmitting light, the protective cover and both upper and lower end faces of the base are closed with an upper end piece and a lower end piece and a synthetic resin for transmitting light is filled in the protective cover. The other outside surface of the base excluding the protection cover is covered with an anticorrosive film and the both end pieces are fastened by a fixing shaft inserted into the concave groove.

Description

  The present invention relates to a lamp using an LED as a light source.

LEDs are widely used in lighting, signals, and other fields because they can be driven at low power, are lightweight, impact resistant, have a long life span, and have a low failure rate. It has the disadvantage that it begins to deteriorate and its life is shortened.
In addition, although LEDs generate less heat than other commonly used light sources, they generate considerable heat when assembled into a large number of assemblies, and unless special heat dissipation means are provided, the luminous efficiency is reduced and the life is extremely short. turn into.

Some lamps that use LEDs illuminate a narrow range by limiting the direction of emitted light to one or a certain narrow angle, while the angle of emitted light is a large angle up to 360 degrees. Some illuminate a wide area.
Patent Document 1 is an example of the former prior art, and Patent Document 2 is an example of the latter prior art.

    Patent Document 1 relates to a “light emitting unit, a lighting device, and a display device”. The heat generated when the LED element emits light is made of a metal having excellent thermal conductivity, such as aluminum, through a plate-like metal base substrate 119. The heat sink 105 formed in a block shape is dissipated to the outside.

  Patent Document 2 relates to an “underwater illumination device”, and its amendment states that “... the outer rigid frame and the mounting frame are both hollow inside and open at the bottom,” (Claim 1), “According to the first invention, since a plurality of underwater illumination bodies are mounted on a substantially cylindrical mounting frame, because the inside is hollow and the bottom end is open, There is a description of "0010" when seawater falls off during pulling, and the weight of the pulling is light and easy to handle. From these descriptions, according to this prior art, the heat of the LED accumulated in the seawater inside the substantially cylindrical mounting frame to which the blue LED is attached is dissipated to the outside together with the seawater from the bottom end outlet. It is understood that they are configured as follows.

  JP 2006-310138 A   Japanese Patent Application Laid-Open No. 2007-87614 and a procedure amendment submitted on August 22, 2008

In Patent Document 1, the members involved in the removal of the heat generated by the LED are plate-shaped and block-shaped as described above, and there is no special device for removing the heat, from the viewpoint of the heat dissipation efficiency, This prior art is limited.
In Patent Document 2, the heat generated inside the substantially cylindrical mounting frame out of the heat generated by the blue LED is accumulated in seawater contained in the mounting frame, and only when the underwater lighting device is pulled up, At the same time, it escapes to the outside from the outlet at the bottom end of the mounting frame and is diffused into the seawater. Therefore, the temperature inside the mounting frame rises when used for a long time, and the LED tends to deteriorate.

  The technical problem of the present invention is to solve the above-mentioned problems of the prior art, so that the base itself to which the LED substrate is attached has a shape capable of obtaining high heat dissipation efficiency, and a plurality of lamp units can be arranged. The lamp unit can be protected from external impacts and can be individually cooled from the four sides, and the lamp unit can be removed and replaced separately. Furthermore, the lamp unit can be used as a fishing light for use in water. It is possible to make it possible to supply power to the fish lamp and to ensure that all of these LED lamps have extremely high thermal conductivity, heat dissipation and corrosion resistance.

The present invention employs the following means in order to make the base itself, to which the substrate on which the LED is mounted, the lamp unit having a shape capable of obtaining high heat dissipation efficiency.
A long base is formed of a material excellent in heat conductivity and heat dissipation, and the cross-sectional shape of the base is formed into a fan-like shape having a recessed groove facing from the inner edge to the center, and extends along the long length. A board on which a large number of LEDs are mounted is mounted on the outer surface of the base, and the LED and the board are covered with a protective cover made of a material that transmits light, and the upper and lower end faces of the protective cover and the base are upper. Close the end piece and lower end piece, fill the protective cover with light-transmitting synthetic resin, cover the outer surface of the base other than the protective cover with a corrosion-resistant film, and insert both end pieces into the concave A lamp unit was obtained by binding with a fixed shaft inserted into the groove, and arranging a power receiving terminal for connecting an LED to an external power source and an installation part for installation on the upper or lower end piece.

The present invention employs the following means in particular in order to allow a plurality of the lamp units to be disposed.
A plurality of lamp-side connectors in which a plurality of lamp units are arranged between the lower support plate and the branch box connected to the external power supply and disposed above the lower support plate and exposed from the power receiving terminal of the upper end piece and the bottom plate of the branch box And connected respectively.

The present invention employs the following means in particular to protect the lamp unit from external impacts and allow it to be individually cooled.
The bottom support plate and the bottom plate of the branch box are formed in a disc shape, and the outer peripheral edge of the lower support plate and the outer peripheral edge of the bottom plate of the branch box are connected by a plurality of rigid protection rods, The lamp units are arranged side by side with a slight gap next to each other so that the LED mounting surface faces outward.

The present invention employs the following means in particular in order to allow the lamp unit to be removed and replaced separately.
The lower end piece of each lamp unit is detachably fitted to the lower support plate, and the upper end piece of each lamp unit is detachably fitted to the focusing plate disposed below the bottom plate of the branch box, The upper end piece thus fitted is fixed and floated by expansion and contraction of a telescopic rod inserted between the bottom plate and the focusing plate.

The present invention employs the following means in particular in order to be able to use the LED lamp as a fish collection lamp used underwater.
A plurality of connection terminals are stored in the branch box, and a lid portion having a power-side underwater connector attached to the top end of the branch box is detachably attached, and the power-side underwater connector is connected to the connection terminal. The plurality of lamp-side connectors and the connection terminals were respectively connected.

The present invention employs the following means in particular in order to ensure sufficient power feeding to the fishlight.
A cable clamp that clamps the cable is arranged above the branch box, the cable clamp and the branch box are connected by a hanging bracket, and the cable that is connected to the power-side underwater connector on the lid of the branch box is clamped by the cable clamp. Configured.

The present invention employs the following means in particular in order to make all of the above-mentioned LED lamps have extremely high thermal conductivity, heat dissipation and corrosion resistance.
The base material was aluminum, and the corrosion-resistant film was a film formed by anodizing, various surface treatments, or various coatings.

  In the first aspect of the present invention, the shape of the cross section of the long base is the shape of a fan surface (portion of the fan paper), and a large number of LEDs are arranged on the outer surface to provide a protective cover. Because it is covered, nothing is placed on the inner surface of the base, that is, on the inner surface of the base that is covered with a corrosion-resistant film that has excellent thermal conductivity and heat dissipation, and the entire wide surface is directly outside. The shape is exposed. Therefore, the heat generated when the LED emits light is greatly expanded inside the base (i.e., the entire surface of the recessed groove facing the center from the inner edge of the base having a fan-shaped cross section) and the protective cover and The entire surface of the base other than the recessed grooves is directly diffused to the outside world. As a result, the heat dissipation efficiency was significantly increased.

The light generated from the external power supply to the LED through the power receiving terminal illuminates a certain range of the outside through a synthetic resin that transmits light and a protective cover that transmits light. And both the end surfaces of the said protective cover and a base are closed by the end piece, The end piece is being firmly fixed by the fixed axis | shaft inserted in the recessed groove inside a base. And this lamp unit can be arbitrarily installed at a required place by the mounting portion.
Thus, a long-life LED lamp unit having high heat dissipation performance and having both robustness and corrosion resistance was obtained in the air and in water.

  In the invention according to claim 2, since a plurality of lamp units are arranged between the lower support plate and the branch box, the light emitted from the LEDs of the lamp units can be changed by changing the shape of the arrangement. A desired wide range can be illuminated in an embodiment. Power is supplied to the LED through a branch box connected to an external power source. Since the lamp side connector is exposed on the bottom plate of the branch box and power is supplied to the LED through the connector, it is easy to connect and disconnect the power receiving terminal and the connector. It is also easy to remove or install the lamp unit from the installation location.

In the invention according to claim 3, since the plurality of rigid protection rods are arranged outside the plurality of lamp units, a strong impact applied from the outside to the lamp unit is received by the protection rod, and the inner lamp unit is damaged. Can be prevented. Since the plurality of rigid protection rods are disposed on the outer peripheral edges of the disk-shaped lower support plate and the disk-shaped bottom plate, they can cope with impacts from all directions. In addition, since a plurality of lamp units are installed adjacent to each other with a slight gap, the side surfaces of the adjacent lamp units are all exposed to the outside world, and a cooling medium such as air or water can freely pass through the gaps. Moreover, it can pass through all the time and efficiently carry out and dissipate all the generated heat to the outside world.
Furthermore, since the base of the lamp unit has a fan-like cross section, a plurality of lamp units can be juxtaposed in a close proximity with a uniform gap inside the rigid protective rod.

  According to the invention described in claim 4, it is possible to easily attach or detach a plurality of lamp units in whole or one by one. That is, the lower end piece of the lamp unit is fitted to the lower support plate, the upper end piece is fitted to the focusing plate, and the focusing plate is extended and pushed down to press the upper end piece. Therefore, installation is easy. Further, since the fitting is removable, the lamp unit can be easily taken out by retracting the telescopic rod, loosening the pressing by the focusing plate and removing the fitting.

In addition, since the attachment and removal of the plurality of lamp units are performed only through the upper end piece and the lower end piece, parts between the two end pieces, that is, the base, the LED, the protective cover, etc. may be damaged in the work. Absent.
In this way, it is possible to attach and detach a plurality of or one lamp unit very simply and safely by the above means.

According to the fifth aspect of the present invention, the above-mentioned lamp can be used as a fish lamp for use in water or in the sea.
Specifically, a power supply side underwater connector is attached to the lid of the branch box, a plurality of connection terminals in the branch box are connected to the connector, and a plurality of lamp side connectors as underwater connectors are connected to the plurality of connection terminals. The power receiving terminals of a plurality of lamp units are connected to the lamp side connector. Thereby, when using the LED lamp comprised so that connection and isolation | separation with the power supply side connector and the lamp | ramp side connector can be used in the water or underwater, the safety | security of the electric circuit came to be maintained.

The invention described in claim 6 particularly relates to a cable for supplying power to the fish collection lamp. It would be convenient if the fish lamp could be easily separated from the cable in preparation for repair or replacement.
For this reason, the cable can be connected to the power-side underwater connector on the lid of the branch box. By the way, a fish lamp generally has a large weight and is suspended in water or sea water. If the weight is borne only by the power source side underwater connector, it becomes impossible. Therefore, the cable is clamped by the cable clamp, and the cable clamp is connected to the branch box by the hanging metal fitting, and the weight of the fish collecting lamp is borne by the hanging metal fitting. This allowed the fishlight to be connected to the cable without imposing a burden on the power-side underwater connector.

Also, if the fishlight is for marine use, it is a common usage to be loaded onto the ship from the land, suspended in the sea at a predetermined place on the sea, and taken back to the land after use. is there. The work involves a series of tasks such as carrying, moving, suspending and lifting the fishlight. In the past, these operations were often performed with the cable in hand. If it does so, the weight of a fish-collecting lamp will be applied only to a cable, and will cause damage to a power source side underwater connector.
According to the present invention, since the above-described operation is performed while holding the hanging bracket or the cable clamp in hand, an accident such as breakage of the power source side underwater connector is caused without causing a load. It became possible to supply power to the fishlight without any problems.

  In the invention according to claim 7, the base material is aluminum having excellent thermal conductivity and heat dissipation. However, when aluminum is used for a long time and corroded, its properties are impaired. In order to overcome this difficulty, the entire outer surface of the base other than the protective cover was covered with a film formed by anodizing, various surface treatments, or various coatings. Thereby, the outer surface of the base exposed to the outside could be made excellent in mechanical strength and excellent in electrical insulation and corrosion resistance.

  1 shows an embodiment of a lamp unit according to the present invention, (a) is a front view thereof, the center part of the figure represents a CC cross section of (c), (b) is a side view thereof, and (c) is a side view. (A) It is AA sectional drawing of a figure.   An example of using the lamp unit for outdoor or on-board lighting or security light is shown.   The example which used the lamp unit for the fish-collecting lamp used underwater or in the sea is shown, (a) is a perspective view of the whole image, (b) is a plane (cross section of the rigid protection rod) of BB of (a) figure. FIG.   An example is shown in which each lamp unit of the fish lamp is configured to be removable or replaceable. (A) shows a state before fitting the lamp unit, and (b) shows a state after fitting.   An example of a mechanism for supplying power to each of the lamp units will be described.

Embodiments of the present invention will be described with reference to the reference numerals in the accompanying drawings.
In the present invention, the LED includes a semiconductor laser and other light emitting elements.
In the first aspect of the invention, aluminum is the most suitable material for the base 2, but copper alloys, ceramics, and the like can also be used. The material of the substrate 5 on which the LED 3 is mounted may be glass epoxy resin, ceramics, or the like, but if aluminum having good thermal conductivity is used, the generated heat is directly transmitted to the base 2 through the substrate 5 and the heat dissipation efficiency can be further increased. . As the protective cover 4 that transmits light, a translucent or transparent, colored (including milky white, etc.) or colorless material is used. Generally, it is a highly transparent and rigid polycarbonate resin, acrylic resin, or the like. However, it is not limited thereto, and glass or the like may be used in some cases. As the synthetic resin 6 that transmits light filled in the protective cover 4, silicon resin is most commonly used, but epoxy resin, urethane resin, or the like is also used. When phosphor particles are included in the resin, the color of light emitted from the LED can be changed separately.

As the corrosion-resistant film 7, a film formed by an anodizing process (for example, anodized process), various surface processes (for example, Tafram (registered trademark) process), various coating processes, or the like is used. Other parts, that is, fixed shaft 8, upper end piece 9, lower end piece 10, lower support plate 16, branch box 17, rigid protective rod 20, focusing plate 21, telescopic rod 22, hanging bracket 25, lid portion 26, cable clamp The material such as 29 is preferably stainless steel having excellent corrosion resistance, but steel, copper alloy, etc. can be used depending on the use environment.
In consideration of corrosion due to electric corrosion, a zinc plate or the like may be attached below the lower support plate 16 or the like.
About LED3, it is recommended to select the color according to the purpose of use.

When it is desired to further improve the heat dissipation efficiency of the base 2, the outer surface of the base 2 exposed to the outside is made into a wavy uneven surface as shown in FIG. 1C, or heat radiating fins are attached to the surface.
FIG. 2 is a conceptual diagram when the lamp unit 1 is used for onboard or outdoor lighting or security light. In this figure, the lamp unit 1 is attached to the structure 15 by the support frame 14, but the illustration is omitted, but by using different support frames, various types of installation places, illumination ranges, appearances, and the like are different. Lighting lights and security lights can be easily created within a simple design. In this example, the end portion of the fixed shaft 8 functions as the attachment portion 11, and the power receiving terminal 12 is configured to be fitted into the groove of the support frame 14.

An embodiment of the invention of claim 2 is shown in FIG. The lamp unit 1 is disposed between the lower support plate 16 and the branch box 17. The design of the arrangement can be appropriately performed according to the purpose including the number of the lamp units 1 and is not limited to the illustrated one.
The details of the connection between the power receiving terminal 12 of the upper end piece 9 and the lamp side connector 18 of the branch box 17 are also shown in FIG. This connection is made so that each lamp unit 1 can be easily placed or removed individually between the lower support plate 16 and the branch box 17, that is, when such work is performed, the connection at the connector 18 is disconnected or connected. It is desirable to configure so that it can be easily rubbed.

An embodiment of the invention of claim 3 is shown in FIG. In the figure, eight rigid protection rods 20 and eight telescopic rods 22 are drawn, but the number must be determined in consideration of the usage environment and other conditions.
The state in which the lamp units 1 inside the protective rod 20 are arranged side by side with a slight gap is clearly shown in FIG. If the gaps are arranged side by side, the important function of the present invention in which air and water freely circulate in the gaps is lost, so special attention must be paid to the design of this part.

An embodiment of the invention of claim 4 is shown in FIG.
The “fitting” in the present invention can be a form in which a male type and a female type are fitted together, and various other design methods can be adopted. In short, the lower end piece 10 and the upper end piece of the lamp unit 1 are important. 9 is fitted to the lower support plate 16 and the focusing plate 21, respectively, so that it does not move and it can be easily removed.
In the example of FIG. 4, in the lower part of the lamp unit 1, the lower end portion of the fixed shaft 8 is fitted into the positioning hole 23 of the lower support plate 16, and the lower end piece 10 is screwed into the mounting portion 11 by screwing a set screw 24. It is bound to the lower support plate 16. At the upper part of the lamp unit 1, the upper end of the fixed shaft 8 is fitted into the positioning hole 23 of the focusing plate 21, and the upper end piece 9 is firmly held down by the focusing plate 21 that the telescopic rod 22 pushes down.

  In general, the main part of the fishlight of this embodiment is assembled as follows. First, the lower end of the rigid protection rod 20 is connected to the outer peripheral edge of the lower support plate 16. Next, the lamp unit 1 is inserted between the protective rods 20 and is inserted into the lower end piece by fitting the lower end of the fixed shaft 8 into the positioning hole 23 of the lower support plate 16 and screwing the set screw 24 into the mounting portion 11. 10 is fixed to the lower support plate 16. Then, the focusing plate 21 is placed on the lamp unit 1 and the upper end of the fixed shaft 8 is fitted into the positioning hole 23 of the focusing plate 21. Next, the upper end of the rigid protection rod 20 is connected to the outer peripheral edge of the bottom plate 19 of the branch box 17. Then, the power receiving terminal 12 of the lamp unit 1 and the lamp-side connector 18 are connected. Finally, the telescopic rod 22 is inserted between the branch box 17 and the converging plate 21, and the upper end thereof is fastened to the bottom plate 19 with a set screw 24. Press the upper surface of the piece 9 firmly.

The operation of detaching the lamp unit 1 from the fish collection lamp of the embodiment is generally performed as follows. First, the connection between the power receiving terminal 12 of the lamp unit 1 and the lamp side connector 18 is cut, and the telescopic rod 22 is contracted to raise the focusing plate 21. Next, the set screw 24 of the lower support plate 16 is removed, the lamp unit 1 is lifted slightly upward, and the lower end of the fixed shaft 8 is pulled out from the positioning hole 23. Finally, it is confirmed that the upper end of the fixed shaft 8 is removed from the positioning hole 23 of the focusing plate 21, and the lamp unit 1 is taken out.
In addition, if the focusing plate 21 has a through-hole (not shown) of a size that does not affect its strength, water freely flows through the through-hole to carry heat to the outside. You can also lighten the weight of the fishlight.

  About the expansion-contraction rod 22, a well-known thing can be used. FIG. 4 shows a structure in which a nut is rotated to expand and contract. The telescopic rod 22 is inserted between the bottom plate 19 and the focusing plate 21, but if the position is indefinite, the push-down force becomes unstable. Therefore, when such a situation is expected, it is necessary to design such that the upper end of the telescopic rod 22 is fastened to the bottom plate 19 with a set screw 24 or the like, as illustrated and described above.

An embodiment of the invention of claim 5 is shown in FIG.
In the drawing, the lid 26 and the branch box 17 are depicted as being screwed together by the lower end of the hanging bracket 25. However, the present invention is not limited to this configuration. Of course, the coupling and the coupling between the lid portion 26 and the branch box 17 may be performed separately.
A power-side underwater connector 27 is attached to the top end of the lid portion 26, and is connected to the connection terminal 28 in the branch box 17. Regarding the connection between the connection terminal 28 and the lamp-side connector 18, only a part is shown in the figure and the others are omitted. It goes without saying that the number of connection terminals 28 is determined according to the number of lamp-side connectors 18 required.

An embodiment of the invention of claim 6 is also shown in FIG.
The material of the hanging metal fitting 25 is selected so that it has high rigidity and is difficult to be deformed because a strong force is applied, as can be inferred from the description in the section of the effect of the invention, when attached to a heavy fishing light. .
The cable clamp 29 is preferably configured to sandwich the cable 30 as shown. In the figure, as an example, a cut is formed in the longitudinal direction of the cylinder and is narrowed with a screw so as to sandwich the cable. The material is solid when there is a problem similar to that of the above-described hanging bracket, but the structure is not limited as long as it is connected to the hanging bracket 25 and can hold the cable 30.

  The base 2 material of the invention of claim 7 has been described above. The corrosion resistant coating is shown as 7 in FIG.

1 Lamp unit 2 Base 3 LED
4 Protective cover that transmits light 5 Substrate 6 Synthetic resin that transmits light 7 Corrosion-resistant coating 8 Fixed shaft 9 Upper end piece 10 Lower end piece 11 Mounting portion 12 Power receiving terminal 13 Recessed groove 14 Support frame 15 Structure 16 Lower support plate 17 Branch box 18 Lamp side connector 19 Bottom plate 20 of branch box Rigid protective rod 21 Focusing plate 22 Telescopic rod 23 Positioning hole 24 Set screw 25 Suspension bracket 26 Lid 27 Power supply side underwater connector 28 Connection terminal 29 Cable clamp 30 Cable

Claims (7)

  A long base is formed of a material excellent in heat conductivity and heat dissipation, and the cross-sectional shape of the base is formed into a fan-like shape having a recessed groove facing from the inner edge to the center, and extends along the long length. A board on which a large number of LEDs are mounted is mounted on the outer surface of the base, and the LED and the board are covered with a protective cover made of a material that transmits light, and the upper and lower end faces of the protective cover and the base are upper. Close the end piece and lower end piece, fill the protective cover with light-transmitting synthetic resin, cover the outer surface of the base other than the protective cover with a corrosion-resistant film, and insert both end pieces into the concave An LED lamp that is connected to a fixed shaft inserted into a groove, and is provided with a power receiving terminal for connecting an LED to an external power source and an installation portion for installation on the upper or lower end piece.   A plurality of lamp-side connectors in which a plurality of lamp units are arranged between the lower support plate and the branch box connected to the external power supply and disposed above the lower support plate and exposed from the power receiving terminal of the upper end piece and the bottom plate of the branch box The LED lamp according to claim 1, wherein the LED lamp is connected to each other.   The bottom support plate and the bottom plate of the branch box are formed in a disc shape, and the outer peripheral edge of the lower support plate and the outer peripheral edge of the bottom plate of the branch box are connected by a plurality of rigid protection rods, The LED lamp according to claim 2, wherein the lamp units are arranged side by side so that a slight gap is provided next to each other and the LED mounting surface faces outward.   The lower end piece of each lamp unit is detachably fitted to the lower support plate, and the upper end piece of each lamp unit is detachably fitted to the focusing plate disposed below the bottom plate of the branch box, The LED lamp according to claim 3, wherein fixing and floating of the fitted upper end piece are performed by expansion and contraction of a telescopic rod inserted between the bottom plate and the focusing plate.   A plurality of connection terminals are stored in the branch box, and a lid portion having a power-side underwater connector attached to the top end of the branch box is detachably attached, and the power-side underwater connector is connected to the connection terminal. The LED lamp according to claim 4, wherein the plurality of lamp-side connectors and the connection terminals are connected to each other.   A cable clamp that clamps the cable is arranged above the branch box, the cable clamp and the branch box are connected by a hanging bracket, and the cable that is connected to the power-side underwater connector on the lid of the branch box is clamped by the cable clamp. The LED lamp according to claim 5, wherein the LED lamp is configured as follows.   The base material is aluminum, and the corrosion-resistant film is a film formed by anodic oxidation treatment, various surface treatments, or various coatings. The claim 1, claim 2, claim 3, claim 4, claim 4, The LED lamp according to claim 5 or claim 6.

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